I have found CAF service not running and trying to start it manually shows the following activity:
CA DSM r12 Common Application Framework 18.104.22.1688
Copyright (c) 2014 CA Technologies. All rights reserved.
Starting caf service...
Waiting for service to confirm startup...
Connecting to caf process...
Starting all DSM services...
The connection with the caf service was broken unexpectedly.
The caf service may have died.
The command failed.
In the latest CAF service log (TRC_CF_CAF_SERVICE_0.log) I can see the following errors:
A problem has occurred loading component cfMessenger
CFFactory_LoadEx: cannot load component file: cfMessenger
Please check that:
1. the file exists
2. all library dependencies are satisfied
3. the requested interface version is available
CFSMMessenger::checkCamIsReady: can't load cfMessenger